this may be a stupid question but when i bought my car it already had a mbc on it but the connector for the factory solenoid was still attached to the solenoid. should it be disconnected or is it fine still hooked up? thanks and sorry if it is a dumb question

 

Leave it hooked up or it will throw a CEL

 

he's right.

 

thats what i figured, thanks for the feedback

 

Next time, read an MBC install write-up, and you'll find the answer on your own along with an explanation.